The central objective of the seducer is the physical possession of the woman; however, in this novel, the author, through his character, proposes a deeper, more complete conquest, achieved both through the play of emotional tension through the resource of the epistle, as well as through the mastery of poetics as a weapon of seduction and treated as an erotic category. The seducer par excellence is the Devil, and this is the protagonist of the novel: a variant of Don Juan; a splitting of Kierkegaard himself, a hopelessly dissatisfied alter ego who wants his entire femininity from every woman; a Don Juan humorist, Mephistophelian reasoner, vampire in his implacable absorption of the loved and martyred woman, in his breaking of all limits in an endless search for satiety. For her part, Cordelia, the victim, the woman conquered based on promises of love, she confesses after Kierkegaard's death that she is not capable of feeling rancor. Regine Olsen –alias Cordelia– will forgive her seducer years later, her lover, and will even read texts by the writer inspired by her in the company of her husband Johan Frederik Schlegel.

Diary of a Seducer is not a simple novel inspired by the author's love for Regine Olsen, or a literary exercise. It is the most complete sublimation of existence, the art of loving as a cold strategy to conquer the heart and the virtue of an innocent 15-year-old woman, revealing with each letter her most intricate and cunning secrets of seduction. It is an important document, without which it is not possible to understand Kierkegaard's thought.